The Houston Rockets have waived center Sean Williams, whose contract for the 2012-13 season—worth approximately $900,000—would’ve become fully guaranteed on August 30. Last season, Williams appeared in eight games with the Dallas Mavericks and three games with the Boston Celtics. Via ESPN.com: “The 6-foot-10, 235-pounder from Arlington is now scheduled to clear waivers Wednesday night. Houston acquired Williams’ rights in late July as part of a sign-and-trade that the Rockets completed with the Boston Celtics to land Courtney Lee in Boston. Williams finished last season with the Celtics after the Mavericks released him March 22. Williams’ D-League rights are still held by the Texas Legends, but it’s not inconceivable that he could land another NBA job before training camps open in late September. The Miami Heat, sources said, have expressed interest in Williams in the past and are known to be in the market for big men, having auditioned former Denver Nuggets center Chris Andersen and ex-New York Knicks power forward Josh Harrellson in recent weeks.”